Respuesta :
The US and Soviet Union had a strained relationship during the 1970s, for the SU (soviet union) was trying to impose its doctrine in neighboring countries. America, wanted to impose democratic governments on the nations in and around the SU, which was not allowed by the Soviets.
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When the Soviet Union invaded Afghanistan, the United States gave up its policy of détente. It boycotted the 1980 Summer Olympics in Moscow and enacted grain trade embargoes.